Padlock.



J. A. GIESE.

PADLOGK.

APPLIGATION FILED ma. 1e, 1911.

1,034,998, Patented Aug. 6, 1912.

- IUNITILED STATES 1iurrrin'fr OFFICE.

JAMES A. GIESE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & WESTLAKElloireecs.

COMPANY, A CORPORATION OF ILLINOIS.

PADLOCK.

Patented Aug. 6, 1912.

Application filed December 176, 1911. Serial No. 666,238.

lTaall whom it may concern:

Be it known that 1, JAMES A. Gmsr., a citizen of the United States, andresident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Padlocks, of which thefollowing is a specification, and which are illustrated in theaccompanying drawings, forming a part thereof.

The invention relates to padlocks and has kfor its object to provide alock of this character which shall be more reliable in operation and ofimproved construction and which shall permit of an increased number ofdeviations in the form of key required to open the same.

The invention is exemplified in the structure to be hereinafterdescribed and which is illustrated in the accompanying drawings, inwhich- Figure 1 is a plan view of a padlock embodying the features ofimprovement provided by the invention, the front wall of the lock casingbeing removed to show the internal construction; Fig. 2 is similar toFig. 1 but shows the parts of the lock in a different position; Fig. 3is also similar to Fig. 1 but illustrates the lock with some of j theoperative parts of the mechanism removed; Figs. 4 and 5 are sectionalviews taken on the lines 4-4 and 5-5 respectively of Fig. 1; Figs. 6 and7 are perspective views showing details of the operative mechanism ofthe padlock.

The invention is illustrated as being embodiedin a padlock having achambered casing 10 of usual shape and a shackle 11 which is pivoted tothe walls of the casing at 12. The point of the shackle 11 is adapted toenter the chamber of the casing through an opening 14 in an end wall ofthe same and has the usual bolt receiving aperture 13 adjacent its end.f

In carrying out the invention a jointed bolt is preferably provided forsecuring the end of the shackle within the chamberof the casing 10. Asshown, this bolt comprises a pivoted member 15 and a longitudinallyslidable member 16 both housed within the chamber of the casing 10. Thepivoted member 15 swings upon a stationary pivot 17 and is provided witha hook 18 upon one of its ends, which hook enters the aperture 13 in theend of the shackle when the lock is closed. The pivoted member 15 andsliding member 16 are operatively connected whereby the sliding of themember 16 turns the member 15 upon its pivot. .Arsy shown, thisconnection takes Vthe form of a pin 19 which projects from a side -faceof the member 16 and 4moves in a slotted opening 20 in the member 15.The bolt members are normally retained in position for securing the endof the shackle by means 'of a spring 21. This spring is preferablycoiled about the pivot 17 and has its opposite ends reactingrespectively upon a stationary stop 22 and upon the pin 19.

The sliding bolt member 16 is provided with a shoulder as 23, (Figs. 3and 7) for engagement by the bit 24 of a key 25 for moving the boltmembers against the effort of the spring 21, to open the lock. Tumblers,as 26, which may be of any well known construction and of which anyusual number may be used, are provided to prevent the movement of thebolt members except by the use of a properly formed key. As shown, thetumblers are provided with slotted recesses 27 adapted to receive a stud28 on the bolt member 16 when brought into register with said stud bythebit of the key in the usual way. Provision is also made for securing thebolt members 15, 16 in open position, when the shackle 11 has beenreleased. As shown, a bridge plate 29 is provided for this purpose. Thisbridge plate swings upon a stationary pivot 30 and normally bearsagainst the end of the shackle 11 to swing the shackle upon the pivot 12when the bolt members are released. To this end, the bridge plate 29 ismoved in one direction by a spring, as 31. This spring may take the formusually employed for the operation of lock tumblers, and as shown hasone end fixed in an end of the bridge plate 29 adjacent the pivot 30, asat 32, the other end of the spring being adapted to react against afixed part of the lock casing, as the shoulder 33, to raise the bridgeplate.

The swinging of the bridge plate 29 about the pivot 30 is preferablylimited in each direction, as by providing the free end of the same witha slotted opening 311 through which the pivot 17 extends. A shoulder 35formed on the bridge plate 29 serves as a stop for holding the boltmembers 15, 16 in member'l';A The bridgeplate 29 also.

serve to prevent the opening of the lock eX- cept by a properly formedkey, thereby addr ing to the security'of the lock. As shown,

' the lower edgeV ot the, bridge plate. is extendn edl toward'the key tosuch an extent that ity will only be cleared by the bit 241' du-ringtlieturning of the key to open the lock, whenl Y thel bit beerecessed, as'indicated at 3'?.

In the' operation of the lock the key 25 is inserted' and rotated` in`the usual4 way. v The bit 24,. being properlylrecessed: to clear thebridge plate 29 and tor raise the tumblers 26 in proper amounts toxbringtheir recesses, as 27, intol-ine with; the stud 2 8- onk the bolt member16,. the bolt members 15, '16,. are moved against the effort of' thespring 21 by the' engagement of the bit 24 with they shoulder 23. Uponthe Withdrawal of the hooked end 18 of the bolt member 15. from theaperture 13 in the pointof the shackle, the end. of the shackle 1sthrownout `of the chamber of the lock casing by theraisingv ot thebridge plate through the pressure exerted by the spring 3.1. This.raising of the bridge plate 29 brings: the shoulder 35 behind the stud'3 6, thus holding the. bolt members, 115, 16 inopen position-Inclosingfthe. lock, the bridge plate 29 issmoved downwardly tol releasethe shoulder 35 trom the stud: 36 by thel engagement. ofl the point ofthe shackle with the upper edge of' the bridge plate, thereby permittingthe spring 21 to throw the hooked. end 180i thel bolt member 15 into thebolt receiving aperture 13 of the shackle.

The construction provides a lock of; reliable operation and as thebridge plate 29 prevents. the opening ot the lock except by a properlyformed key, it, in efect, serves as an additional tumblery andYthereforeladds to the security with'nwhiclr the'parlts; of* the lock.are held in closed position.

IA claim as4 my .invention-. i K 1.. yIna padlock, in combin"tion,'avshackle a sliding rnember'having a lateral stu.d,` an E-oscillatableplate having a shoulder enga if 'ablewith the stud when the sliding memb'into Vposition for engagement withtlie the-plate*extending into thepath o to its spring by theelosin'g' of the shacklei'f' 55 2;` Imapadlock, incombinatiomja sharekle, a- Vjointed boltcomprisingfoperatively con the shackle and; the'lsliiding .member` having ashoulder. for-.engagement by' the-key', A a: tumbler cooperatingV witlrthe nsliding bolt member, a stud on the lslidingfbolt memable into thepa-tlr of th'ef` said studfor the opening of the lock' and aspring-iurging the bridge platey against theendiI oli thevshackle'.

a; shackle pivoted to7 thefcasing-its: free end being apertured andbeing arranged1 tos enter they casing,. a 'spring' advanced; ilatch'ipivoftedtureofzthe shackle,h a key controlled sli e member attached tothe latch and having a' f' I: lug, a plate pivot'edto thecasingfbearing: against the end of the shackle'whens such end. is within; the.lcasing; andhavinga slnioful'-V der for' engagement by"the"lug when thespring" urgingthepivote'd plate toward the 80 shackle end.' Y fWitnesses:

f CHARLES-ABT., GILLsoN M. VQKL'M'CHER. f

Copies kofthisY patent:I may be obtained; for ve cents; each, 'byaddressing;therv lillommissio'uelj ofllracenter;VVV A y,

, Washington, Di U. y y f Y 5o is. retracted, and a spring urging y,

shackle end and being movable in opposition nectedl pivoted and sliding.members-,f the pivoted bolt member beingenga'geable with ber, va bridgeplatehaving a shoulder4 mov- 3.. a padlock, in combination, aoasiing, lv

to: thev casing'aiid engageablewith: the aper-v A* slid'ing'plate isin'fretraeted, position?, and? a r i JAMES" AQGrEsEiQ

